Why are plasma membranes arranged as a bilayer rather than a monolayer?

Classify the structures as homologous or analogous, depending on their structure and function.

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.